The effect of variation in estrogen dosage on the pregnancy rate during sequential oral contraception.
D000328:Adult; D002986:Clinical Trials as Topic; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D004997:Ethinyl Estradiol / Q000008:administration & dosage*; D005260:Female; D005306:Fertilization; D006801:Humans; D008535:Megestrol / Q000008:administration & dosage; D010060:Ovulation / Q000187:drug effects*; D011247:Pregnancy; D011276:Pregnanediol / Q000652:urine; D011372:Progestins / Q000008:administration & dosage*
D003276:Contraceptives, Oral; D011372:Progestins; D004997:Ethinyl Estradiol; D008535:Megestrol; D011276:Pregnanediol